Abraham coates



A. COATES.

Lamp.

No. 14,492. Patented March 25. 1856.

NITED STATES PATENT ()FFICE.

ABRAHAM COATES, OF NEWV YORK, N. Y.

REGULATING THE FLOW OF OIL TO THE WICK I1\T CARCEL LAMPS.

Specification forming part of Letters Patent No. 14,492, dated March 25, 1856; Reissued January To all whom it may concern Be it known that I, ABRAHAM COATES, of New York, in the county of New York and State of New York. have invented an improvement in Pressure-Lamps, and that the following is a full, clear, and exact description of the principle or character which distinguishes it from all other things before known and of the usual manner of making, modifying, and using the same, reference being had to the accompanying drawing.

Figure 1 represents a vertical section through the whole apparatus. Fig. 2 a detached perspective of part of the lamp.

My invention consists in a mode of regulating the flow of oil to the wick in that class of lamps known as the Carcel lamps, or lamps in which the oil is made constantly to overflow the wick tube, the construction and operation of which is as follows.

The lamp is designed chiefly for lighthouses. The reservoir or fountain a is elevated at the height proper to give the required pressure, and within this is siphon Z) the short leg of which terminates above the bottom of the reservoir, the long leg passing through the bottom of the reservoir and down to the wick tube 72. of the lamp. The object of the siphon tube is to avoid impurities of the oil which settle at the bottom of the fountain. The flow of oil to the wick is regulated by the following automatic contrivance. In an enlargement 6 of the siphon tube is a valve 6 which is opened and closed by the axis of the gimbal 6 connected with the balance lever h. At one end of this lever is an adjustable weight 2' and at the other end a waste or drip cup is. The waste tube 25 conducts from the burner the overflowing oil to the drip cup. The drip cup so that it may flow uniformly through the aperture m. The self regulation is effected as follows: The drip cup is charged with oil to such an extent that with the adjustment of the weight 2' the valve 6 will be sufficiently open to furnish the proper supply to the wick and waste through tube If. setscrews 8 s are then adjusted so that the lever will not move so far in either direction as to cause either an excess of supply or cut it off altogether. If from any cause the oil should flow too fast, it will fill the drip cup faster than it can empty itself through aperture m and the increased weight of the cup will cause that end of the lever to descend and diminish the valve opening and lessen the supply. The cup will then empty itself to its proper level, return to its proper position and thus regulate the flow of oil. If from any cause the flow should be too slow the cup will empty itself faster than the cup is supplied with oil and the consequence will be a further opening of the valve and a greater supply. It is important to the success of this mode of regulation that the oil should be kept pure.

l/Vhat I claim as my invention and improvement in lamps in which the oil. is forced to the wick so as to overflow, is,

Regulating the supply of oil to the burner by means of the self emptying drip cup operating upon the supply valve as herein set forth.

ABR. COATES.

WVitnesses:

THOs. V. ALDEN, "1 b'lARR E. JACKMAN.

[Fms'r PRINTED 1912.]

is provided with a strainer to clean the oil The 

